HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect

Two sets of silica-supported nickel phosphide catalysts with a nickel content of about 2.5 and 10 wt % and Ni/P molar ratio 2/1, 1/1 and 1/2 in each set, were prepared by way of a temperature-programmed reduction method using (Ni(CH₃COO)₂) and ((NH₄)₂HPO₄) as a precursor. The Ni_xP_y/SiO₂ catalysts were characterized using chemical analysis N₂ physisorption, XRD, TEM, ³¹P MAS NMR. Methyl palmitate hydrodeoxygenation (HDO) was performed in a trickle-bed reactor at 3 MPa and 290 °C with LHSV ranging from 0.3 to 16 h⁻¹. The Ni/P ratio was found to affect the nickel phosphide phase composition, PO_x groups content and catalytic properties in methyl palmitate HDO with the TOF increased along with a decline of Ni/P ratio and a growth of PO_x groups’ content. Taking into account the possible routes of methyl palmitate conversion (metal-catalyzed hydrogenolysis or acid-catalyzed hydrolysis), we proposed that the enhancement of acid PO_x groups’ content with the Ni/P ratio decrease provides an enhancement of the rate of methyl palmitate conversion through the acceleration of acid-catalyzed hydrolysis. View Full-Text

Keywords: nickel phosphide; Ni/P ratio; nickel content; POx groups content; 31P MAS NMR; acidity; hydrodeoxygenation; methyl palmitate

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Deliy, I.V.; Shamanaev, I.V.; Gerasimov, E.Y.; Pakharukova, V.P.; Yakovlev, I.V.; Lapina, O.B.; Aleksandrov, P.V.; Bukhtiyarova, G.A. HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect. Catalysts 2017, 7, 298. https://doi.org/10.3390/catal7100298

AMA Style

Deliy IV, Shamanaev IV, Gerasimov EY, Pakharukova VP, Yakovlev IV, Lapina OB, Aleksandrov PV, Bukhtiyarova GA. HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect. Catalysts. 2017; 7(10):298. https://doi.org/10.3390/catal7100298

Chicago/Turabian Style

Deliy, Irina V., Ivan V. Shamanaev, Evgeny Y. Gerasimov, Vera P. Pakharukova, Ilya V. Yakovlev, Olga B. Lapina, Pavel V. Aleksandrov, and Galina A. Bukhtiyarova. 2017. "HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect" Catalysts 7, no. 10: 298. https://doi.org/10.3390/catal7100298

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HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect

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